YUVImageCnvC - Conversions into/from the YUV image

User Documentation

Centre for Vision, Speech & Signal Processing

Comments:
The class YUVImageCnvC performes a conversion between two color images using different representations. One of the representations is byte YUV image.

Parent Classes:

ColorImageAC

YUVImageC

Methods:

YUVImageCnvC(): Creates a dummy image.
YUVImageCnvC(const YUVImageCnvC & im): Creates another handler of the image 'im'.
YUVImageCnvC(const YUVImageC & im): Creates another handler of the image 'im' that is possible to convert into another image.
YUVImageCnvC(ColorImageAC * im): Creates a YUV intensity image from the general color image 'im' using the conversion RealY().
~YUVImageCnvC(): Desctructor. Image conversions. ------------------
const ColorImageAC * ColorImageA() const: Returns this image as an constant general color image.
ColorImageAC * ColorImageA(): Returns this image as an general color image.
ByteImageCnvC Y(): Returns the intensity byte image.
ByteImageCnvC Red(): Returns the intensity byte image of the red component.
ByteImageCnvC Green(): Returns the intensity byte image of the green component.
ByteImageCnvC Blue(): Returns the intensity byte image of the blue component.
DoubleImageCnvC RealY(): Returns the intensity double image.
DoubleImageCnvC RealRed(): Returns the intensity double image of the red component.
DoubleImageCnvC RealGreen(): Returns the intensity double image of the green component.
DoubleImageCnvC RealBlue(): Returns the intensity double image of the blue component.
RGBImageCnvC Rgb(): Returns the image of byte RGB values.
RealRGBImageCnvC RealRgb(): Returns the image of real RGB values.
YUVImageCnvC Yuv(): Returns the image of byte YUV values.
RealYUVImageCnvC RealYuv(): Returns the image of real YUV values.

#include "amma/CoImageA.hh"

const ColorImageAC & operator=(const ColorImageAC & im): Assigment.
ByteImageCnvC Y(): Returns the intensity byte image.
ByteImageCnvC Red(): Returns the intensity byte image of the red component.
ByteImageCnvC Green(): Returns the intensity byte image of the green component.
ByteImageCnvC Blue(): Returns the intensity byte image of the blue component.
DoubleImageCnvC RealY(): Returns the intensity double image.
DoubleImageCnvC RealRed(): Returns the intensity double image of the red component.
DoubleImageCnvC RealGreen(): Returns the intensity double image of the green component.
DoubleImageCnvC RealBlue(): Returns the intensity double image of the blue component.
RGBImageCnvC Rgb(): Returns the image of byte RGB values.
RealRGBImageCnvC RealRgb(): Returns the image of real RGB values.
YUVImageCnvC Yuv(): Returns the image of byte YUV values.
RealYUVImageCnvC RealYuv(): Returns the image of real YUV values.

#include "amma/YUVImage.hh"

ByteImageC RGBChromaticityDiagram(const SizeT resolution) const: get the chromaticity diagram with the specific 'resolution using chromaticity derived from RGB values
ByteImageC XYZChromaticityDiagram(const SizeT resolution) const: get the chromaticity diagram with the specific 'resolution using chromaticity derived from XYZ values
ByteImageC & Y(ByteImageC & image) const: Copy the Y component into the 'image' and return the result. Conversions between color images. ---------------------------------
ByteImageC Y() const: get the Y component of the image
ByteImageC Red() const: get the red component of the image
ByteImageC Green() const: get the green component of the image
ByteImageC Blue() const: get the blue component of the image
DoubleImageC RealY() const: get the Y component of the image
DoubleImageC RealRed() const: get the red component of the image
DoubleImageC RealGreen() const: get the green component of the image
DoubleImageC RealBlue() const: get the blue component of the image
ByteImageC U() const: get the U component of the image
ByteImageC V() const: get the V component of the image
YUVImageC Yuv() const: Creates another handle into the image
RGBImageC Rgb() const: Converts the image into the image of RGB values
RealRGBImageC RealRgb() const: Converts the image into the image of RGB values
RealYUVImageC RealYuv() const: Converts the image into the image of real YUV values
const YUVImageC & YUVImage() const: access to the whole constant image
YUVImageC & YUVImage(): access to the whole image
void Copy(const YUVImageC & image): Copyies the values of image 'img' into this image.
void Copy(const ImageRectangleC & rect,const PixelC & newOrigin): Copies the rectangle domain 'rect' of the image into the position 'newOrigin'.
YUVImageC Copy() const: a physical copy of image
ImageAC * ACopy() const: A physical copy of this image.
ImageAC * AnotherImage() const: Creates a new empty image of the same type and size as this image is.
YUVImageC Rotate(const Point2dC & center,RealT angle,ByteYUVValueC background) const: turn the image in the 'angle'. The value outside of the original image are substituted by the value 'background'
YUVImageC ReduceAverage() const: generate the new image which has half ranges the new pixel values are averages of old ones
YUVImageC ReduceSample() const: generate the new image which has half ranges the new pixel values are samples of old ones
void LocalAverage3x3(): Each pixel value is replaced by the average of 3x3 pixel values.
const YUVImageC & operator+=(const YUVImageC & img): Adds the values of image 'img' to the values of this image.
void SaveAs(ImageOStreamC & outS,ImageFileFormatT format = PPM_P6): Saves the image into the stream 'outS' using the 'format'
void SaveAs(const FilenameC & fileName,ImageFileFormatT format = PPM_P6): Saves the image into the file 'fileName' using the 'format'.

#include "amma/Image.hh"

ImageC<ByteYUVValueC> Copy() const: Creates another physical copy of this image.
void Copy(const ImageC<ByteYUVValueC> & image): Copies the contents of image "img" into this image.
void Copy(const ImageRectangleC & rect,const PixelC & newOrigin): Copies the region of the image defined by rectangle "rect" into the region whose origin is "newOrigin".
ImageAC * ACopy() const: A physical copy of this image.
ImageAC * AnotherImage() const: Creates a new empty image of the same type and size as this image is.
const ImageC<ByteYUVValueC> & operator=(const ImageC<ByteYUVValueC> & image): Assigment of a big object.
void ReflectUp(const ImageRectangleC & rect): Mirrors the image rectangle along its top edge.
void ReflectDown(const ImageRectangleC & rect): Mirrors the image rectangle along its bottom edge.
void ReflectLeft(const ImageRectangleC & rect): Mirrors the image rectangle along its left edge.
void ReflectRight(const ImageRectangleC & rect): Mirrors the image rectangle along its right edge.
void ReflectFrom(const ImageRectangleC & rect): Mirrors the image rectangle "rect" along its sides to fill the whole image.
void Rotate90(const ImageC<ByteYUVValueC> & originalImage): The values of image "originalImage" rotated about PI/2 rad and shifted to have the original upper-left corner and are saved into this image.
void Rotate180(const ImageC<ByteYUVValueC> & originalImage): The values of image "originalImage" rotated about PI rad and shifted to have the original upper-left corner and are saved into this image.
void Rotate270(const ImageC<ByteYUVValueC> & originalImage): The values of image "originalImage" rotated about 3/2*PI rad and shifted to have the original upper-left corner and are saved into this image.
ImageC<ByteYUVValueC> Rotate(const Point2dC & center,RealT angle,ByteYUVValueC background) const: The values of this image are rotated about "angle" (in rad) and saved to the result image.
Note the AMMA convention that the 1st or "x" coordinate of Point2dC is associated with the image row no., and the 2nd or "y" coordinate with the image column no.
void Rotate(const ImageC<ByteYUVValueC> & originalImage,const Point2dC & center,RealT angle,ByteYUVValueC background): The values of image "originalImage" rotated about "angle" rad are saved into this image.
Note the AMMA convention that the 1st or "x" coordinate of Point2dC is associated with the image row no., and the 2nd or "y" coordinate with the image column no.
void ShiftRowIndexes(const IndexT offset): Row indices of the items will be shifted by "offset".
There must be only one reference to this image.
For +ve "offset", the image is shifted down, or the coordinate system is shifted up.
void ShiftColIndexes(const IndexT offset): Column indices of the items will be shifted by "offset".
There must be only one reference to this image.
For +ve "offset", the image is shifted down, or the coordinate system is shifted up.
ImageC<ByteYUVValueC> Subsample(IntT factor = 2) const: returns an image subsampled by a factor of "factor"
void SetOrigin(const PixelC & newOrigin): The image coordinates are changed so that the top left pixel will have coordinates of "newOrigin".
There must be only one reference to this image.

Grey level operations.
ImageC<ByteYUVValueC> & Fill(ByteYUVValueC value): Fills the image with "value"
ImageC<ByteYUVValueC> & Frame(ByteYUVValueC value): Fills a 1-pixel-wide border around the image with "value"
ImageC<ByteYUVValueC> & Frame(ByteYUVValueC v,const ImageRectangleC & rect): Fills a 1-pixel-wide rectangle with "v";
the rectangle is the intersection of "this" with "rect".
ImageC<ByteYUVValueC> Pad(const ImageRectangleC & rect) const: Creates a new image whose frame is from "rect", with pixels copied from "this".
Where the new image lies outside "this", it is padded out with the nearest value from "this".

Logical conditions.
BooleanT IsValid() const: Returns FALSE if the image does not have a valid data area allocated

Access to pixels values.
const RangeBufferAccessC<ByteYUVValueC> operator[](IndexT r) const: Access to the row of the row of pixels.
RangeBufferAccessC<ByteYUVValueC> operator[](IndexT r): Access to the row of the row of pixels.
ByteYUVValueC & operator[](const Index2dC & pxl): Returns the content of the pixel.
const ByteYUVValueC & operator[](const Index2dC & pxl) const: Returns the content of the pixel.
ByteYUVValueC & operator[](const PixelC & pxl): Returns the content of the pixel.
const ByteYUVValueC & operator[](const PixelC & pxl) const: Returns the content of the pixel.
const ByteYUVValueC * CRow(PixelIndexT row) const: Access to the beginning of the row, eg. t
The returned pointer points to the first pixel of the "row".
ByteYUVValueC * Row(PixelIndexT row): Access to the beginning of the constant "row"
I.e. the returned pointer points to the first pixel of "row".
void Save(ostream & outS,BooleanT useHeader = TRUE) const: Saves templated image to stream.
For byte images it will save them in either PGM or PPM binary format. For other types it will save them in ascii if a suitable stream operator has been written for the templated class. NB. These treat images of ByteGreyValueT specialy, the image values are read as numbers not as charactors.
void Load(istream & outS,BooleanT useHeader = TRUE): Loads templated image type from ascii stream.
Should not be used for binary PGM/PPM files, but should work on most templated types. NB. These treat images of ByteGreyValueT specialy, the image values are written as numbers not as charactors.
ByteYUVValueC ** StartAddress() const: Returns the pointer to the table of pointers to image.
This being public is really only a hack! EXPERTS ONLY!
BufferRC<ByteYUVValueC> & Buffer(): Access buffer where data is stored.
const BufferRC<ByteYUVValueC> & Buffer() const: Access buffer where data is stored.

#include "amma/BasImage.hh"

const ImageRectangleC & Rectangle() const: Returns the image rectangle.
const Index2dC & Origin() const: Returns the upper-left pixel coordinates of the image rectangle.
const Index2dC & End() const: Returns the lower right pixel coordinates of the image rectangle.
const ImageFileInfoC & ImageFileInfo() const: Access to the origin.
const BaseImageC & BaseImage() const: access to the constant object
BaseImageC & BaseImage(): access to the object
Modification of the object --------------------------
void SetRowSubRange(const IndexT newMin,const IndexT newMax): The range of indexes of the array will be constrained
void SetColSubRange(const IndexT newMin,const IndexT newMax): The range of indexes of the array will be constrained.
void SetSubRange(const ImageRectangleC & range): Constrains the domain of the image.
void SetFullRectangle(): Sets the working rectangle to be allocated rectangle of the image.
void SetImageFileInfo(ImageFileInfoC * newInfo): Sets a new image file information respecting the current size of the image.
BooleanT IsEmpty() const: Returns TRUE if the image has zero size
void ErrDifferentSize(const BaseImageC & image,char * functionName) const: Triggers an error event if this image has different size from `image'.
The functionName should be the name of the function that triggers the error event.
SizeT Rnum() const: Returns number of rows.
SizeT Cnum() const: Returns number of columns.
IndexT TRow() const: Returns the top row index.
IndexT LCol() const: Returns the left side column index.
IndexT BRow() const: Returns the bottom row index.
IndexT RCol() const: Returns the right side column index.
LongIntT Area() const: Returns the area of the image rectangle expressed in number of indexs.
UIntT Count() const: Returns the number of refrences to this object.
NB. The following definition is now obsolete, The value 0 means there is no other reference to this object.
const ImageRectangleC & AllocatedRect() const: Access allocated rectangle.
BooleanT IsBlock() const: Returns TRUE if the image is allocated as one block of memory.

#include "amma/ImageA.hh"

ImageAC * ACopy() const: A physical copy of the image.
ImageAC * AnotherImage() const: Creates a new empty image of the same type and size as this image is.
const ImageRectangleC & Rectangle() const: Returns the working image rectangle.
void ShiftRowIndexes(const IndexT offset): all indexes of the items will be shift by 'offset'
void ShiftColIndexes(const IndexT offset): all indexes of the items will be shift by 'offset'
void SetRowSubRange(const IndexT newMin,const IndexT newMax): the range of indexes of the array will be constrained
void SetColSubRange(const IndexT newMin,const IndexT newMax): the range of indexes of the array will be constrained
const ImageFileInfoC & ImageFileInfo() const: access to the const origin

Programmer:Radek Marik, Documentation by CxxDoc: Tue Mar 20 10:48:08 2001

YUVImageCnvC

Conversions into/from the YUV image

include	"amma/YuvImCnv.hh"
User Level:	Default
Library:	ImageCnv
Example:	exIter.cc
Section:	Image.Converters
In Scope:	std

Grey level operations.

Logical conditions.

Access to pixels values.